Messed up Install--How to Remove?

I tried putting GalCiv on my ancient laptop, even though it didn't quite meet the minimum requirements. It froze during the installation process, and I ended up having to simply reboot the machine. Now there are many (but not all) of the files copied onto the machine, but there is no "add/remove programs" entry for GalCiv and when I try to use GalCiv's "uninstall" program, it says it can't find the program (or something like that.)

I can just delete the files, but I want to make sure there are no messed up registry entries or anything like that.

Any ideas how to go about doing this?

Or should I not worry about it?

-Kris